Let's face it. One of the great joys of tennis is returning a ball at 90+ mph for a winner. That is pro-level pace.
The problem is that one may fall into a seductive trap by attempting to strike big shots at every opportunity. The usual outcome is to send the ball flying long or to dump it into the net.
The better tactic is to move your opponent around until an opening appears. A good example of this approach is to progressively move you opponent into a corner with inside-out forehands until the rest of the court is open for an easy up-the-line or down-the-middle winner. Some coaches or commentators refer to patient manipulation of the opponent as "constructing the point".
Although hitting big shots may be fun, point construction wins matches.
Or so I've been told.